<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
</head>
<body>
<h1>用户文件管理</h1>
<form action="">
    username:<input type="username" name="username"/><br/>
    password:<input type="password" name="password"/><br/>
    <input type="button" value="登录">
</form>
</body>
</html>